What events does canvas have?

Canvas events include click event, mousemove event, mousedown event, mouseup event, mouseout event, mouseenter event, contextmenu event, touchstart event, touchmove event, touchend event, etc. Detailed introduction: 1. Click event, to realize the selection and interaction of elements; 2. Mousemove event, to realize the mouse following effect or draw a continuous path, etc.

#The operating environment of this article: Windows 10 system, Dell G3 computer.

Canvas is an element in HTML5 used to draw graphics, animations and other visual effects. It provides a set of events that trigger actions when the user interacts with the canvas. The following are common events in Canvas:

click event: triggered when the user clicks the mouse on the canvas. You can use this event to implement element selection and interaction.

mousemove event: Triggered when the user moves the mouse on the canvas. You can use this event to implement mouse following effects or draw a continuous path.

Mousedown event: Triggered when the user presses the mouse on the canvas. You can use this event to implement interactive operations such as dragging and drawing shapes.

Mouseup event: Triggered when the user releases the mouse on the canvas. You can use this event to end interactive operations such as dragging and drawing shapes.

mouseout event: triggered when the mouse moves out of the canvas. You can use this event to achieve the effect of moving the mouse in and out.

mouseenter event: triggered when the mouse moves into the canvas. You can use this event to achieve the effect of moving the mouse in and out.

Contextmenu event: Triggered when the user right-clicks on the canvas. You can use this event to implement custom context menus.

Touchstart event: Triggered when the user starts touching on the touch screen. You can use this event to implement touch interactions.

Touchmove event: Triggered when the user moves their finger on the touch screen. You can use this event to implement touch interaction operations, such as drawing a continuous path.

touchend event: Triggered when the user releases their finger on the touch screen. You can use this event to end a touch interaction.

The above are common events in Canvas. You can choose appropriate events according to specific needs to achieve interactive effects. At the same time, you can also obtain information such as the coordinates of the mouse or touch through the event processing function, so that you can perform corresponding drawing or operations.

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